2217250056 has 128 divisors (see below), whose sum is σ = 6435072000. Its totient is φ = 623572992.

The previous prime is 2217250039. The next prime is 2217250067. The reversal of 2217250056 is 6500527122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5850075 + ... + 5850453.

It is an arithmetic number, because the mean of its divisors is an integer number (50274000).

Almost surely, 2^2217250056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2217250056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3217536000).

2217250056 is an abundant number, since it is smaller than the sum of its proper divisors (4217821944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2217250056 is a wasteful number, since it uses less digits than its factorization.

2217250056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 2217250056 is about 47087.6847593933. The cubic root of 2217250056 is about 1303.9818849655.

Adding to 2217250056 its reverse (6500527122), we get a palindrome (8717777178).

The spelling of 2217250056 in words is "two billion, two hundred seventeen million, two hundred fifty thousand, fifty-six".